footer{
    background-color: #1E2E50;
}
footer div{
    width: 1200px;
    margin: 0 auto;
}
section div{
    width: 1200px;
    margin: 0 auto;
}
header{
     width: 1896px;
     height: 858px;
     margin: 0 auto;
     position: relative;
}
.a1{
    width: 1200px;
    /* margin: 0 auto; */
    /* overflow: hidden; */
}
.a1 p{
    float: right;
    position: absolute;
    top: 0;
    right: 360px; 
    color: white;
}
a{
    color: red;
}
nav ul li{
    float: left;
    line-height: 100px;
    font-size: 24px;
    color: white;
    margin: 0 41px;
}

nav ul{
    position: absolute;
    top: 5%;
    left: 18%;   
    z-index: 200;
}

.c1{
    width: 3792px;
    position: absolute;
    top: 0;
    left: 0;
    animation: lunbotu 6s 2s  infinite;
}
.c1 li{
    float: left;
}
.c2{
    width: 1896px;
    height: 896px;
    overflow: hidden;
    position: relative;
}
@keyframes lunbotu{
    0%,20%,40%,100%{
        left: 0;
    }50%,60%,70%,80%{
        left: -1896px;
    }
}